KOL Limited has seen a huge growth in companies investing in online marketing. Many companies have incorporated newsletter in to their marketing strategy to build customer retention, as focusing on the customer will help ensure the company gets more sales and can grow.KOL Limited has developed a newsletter software which can either be integrated on to the companys current website or have it hosted independently on their local server. We have the ability to design a template that will convey the correct branding of the company in a way that will meet the companys marketing objectives. The newsletter is appealing, simple yet effective. The main aim is for the newsletter to be easy to read. The content on the newsletter has to be precise and informative for it to be successful. The newsletter gives you the ability to build a relationship with your customers by providing them with up to date information and giving them the ability to engage with you. 5 reasons why you should use newsletter marketing; 1) To promote the companys products or services; 2) Keeping your customers and clients up to date. 3) Building a relationship with your customers 4) Cost effective compared to print advertising. 5) Richer content, straight to the point.